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alternate angle — noun Date: 1610 one of a pair of angles with different vertices and on opposite sides of a transversal at its intersection with two other lines: a. one of a pair of angles inside the two intersected lines called also alternate interior angle b.… … New Collegiate Dictionary
alternate angles — n. Geom. a pair of nonadjacent angles, one on each side of a transversal, that are both interior or both exterior: these paired angles are equal if the lines cut by the transversal are parallel … English World dictionary
exterior angle — n. 1. any of the four angles formed on the outside of two straight lines when crossed by a transversal: see ALTERNATE ANGLES 2. an angle formed by any side of a polygon and the extension of the adjacent side … English World dictionary
alternate angles — Geom. two nonadjacent angles made by the crossing of two lines by a third line, both angles being either interior or exterior, and being on opposite sides of the third line. [1650 60] * * * alˌternate ˈangles 7 [alternate angles] (also ˈZ angles) … Useful english dictionary
alternate angles — Geom. two nonadjacent angles made by the crossing of two lines by a third line, both angles being either interior or exterior, and being on opposite sides of the third line. [1650 60] * * * … Universalium
corresponding angles — Geom. two nonadjacent angles made by the crossing of two lines by a third line, one angle being interior, the other exterior, and both being on the same side of the third line. Cf. alternate angles. [1790 1800] * * * … Universalium
Transversal (geometry) — A transversal cutting two parallel lines In geometry, a transversal is a line that passes through two or more other lines in the same plane at different points. When the lines are parallel, as is often the case, a transversal produces several… … Wikipedia
Transversal line — In geometry, a transversal line is a line that passes through two or more other coplanar lines at different points.In Euclidean geometry if lines a and b are parallel, and line t intersects lines a and b , then corresponding angles formed by line … Wikipedia
alternateangle — al·ter·nate angle (ôlʹtər nĭt, ălʹ ) Angles 3,6 and 4,5 are alternate interior angles; angles 1,8 and 2,7 are alternate exterior angles. Clarinda/Academy Artworks n. One of a pair of nonadjacent angles on opposite sides of a transversal that cuts … Universalium
Angle — This article is about angles in geometry. For other uses, see Angle (disambiguation). Oblique angle redirects here. For the cinematographic technique, see Dutch angle. ∠, the angle symbol In geometry, an angle is the figure formed by two rays… … Wikipedia
Absolute geometry — is a geometry based on an axiom system for Euclidean geometry that does not assume the parallel postulate or any of its alternatives. The term was introduced by János Bolyai in 1832.[1] It is sometimes referred to as neutral geometry,[2] as it is … Wikipedia